Home / 21,821.91-32,747.21-11,968.11

Finding the Fourth Proportional to 21,821.91, 32,747.21 and 11,968.11

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Solution

The fourth proportional to 21,821.91, 32,747.21 and 11,968.11 is: 17,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,821.91 : 32,747.21 = 11,968.11 : x
  2. Step 2: Convert to fraction form
    21,821.91/32,747.21 = 11,968.11/x
  3. Step 3: Cross multiply
    21,821.91x = 32,747.21 × 11,968.11
  4. Step 4: Simplify right side
    21,821.91x = 391,922,211.47
  5. Step 5: Solve for x
    x = 391,922,211.47/21,821.91
  6. Step 6: Final answer
    x = 17,960.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.